code: def test_get_expression(self):
      get = self.get_parser
  
      p = get("4.2")
      self.assertEqual(p.get_expression(), "y ")
  
      p = get("4.7")
      with self.assertRaises(ValueError) as ve:
          p.get_expression()
      self.assertIn("is inside a code", str(ve.exception))
  
      p = get("5.25")
      self.assertEqual(p.get_expression(), "range(10)")
  
      p = get("6.7")
      self.assertEqual(p.get_expression(), "py")
  
      p = get("6.8")
      self.assertEqual(p.get_expression(), "")
  
      p = get("7.9")
      self.assertEqual(p.get_expression(), "py")
  
      p = get("8.end")
      self.assertEqual(p.get_expression(), "x.__len__")
  
      p = get("9.13")
      self.assertEqual(p.get_expression(), "r'asdf'")
  
      p = get("9.17")
      with self.assertRaises(ValueError) as ve:
          p.get_expression()
      self.assertIn("is inside a code", str(ve.exception))
  
      p = get("10.0")
      self.assertEqual(p.get_expression(), "")
  
      p = get("11.3")
      self.assertEqual(p.get_expression(), "")
  
      p = get("11.11")
      self.assertEqual(p.get_expression(), "False")
  
file_path: catboost/contrib/tools/python/src/Lib/idlelib/idle_test/test_hyperparser.py
imports: import unittest
  from test.test_support import requires
  from Tkinter import Tk, Text
  from idlelib.EditorWindow import EditorWindow
  from idlelib.HyperParser import HyperParser
label_desc: Use image node_id 10 for calling the HyperParserTest obj's underlying member method code with example usage: obj.test_get_expression() without return types